ASTROSAT CZTI

Data Quality Report

Orbit 45536

Creation date: 2024-06-27T23:13:22.726282
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A13_071T02_9000006106_45536cztM0_level2.fits modeM0/AS1A13_071T02_9000006106_45536cztM0_level2_quad_clean.evt
Size (bytes)618,442,560124,335,360
Size589.8 MB 118.6 MB
Events in quadrant A6,743,103837,978
Events in quadrant B4,376,105859,885
Events in quadrant C4,866,287801,014
Events in quadrant D6,297,272718,502

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255121
B0183971
C0201361
D0242881

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78712583.277855%
B78712833.595477%
C78714345.513912%
D78717359.338076%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7871 7871 19 19 0.24% 0.24%
B 7871 7871 102 102 1.30% 1.30%
C 7871 7871 294 294 3.74% 3.74%
D 7871 7871 512 512 6.50% 6.50%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 2890610 15083.72 914 894 191.6
A 13 248 303332 1578.66 914 894 191.6
A 3 137 11031 52.91 914 894 191.6
B 15 201 596405 3210.69 914 885 185.5
B 5 172 48933 259.04 914 885 185.5
B 0 183 31024 162.49 914 885 185.5
C 12 2 875860 4166.0 883 890 210.0
C 14 254 537153 2553.31 883 890 210.0
C 2 14 9826 42.55 883 890 210.0
D 1 52 1821658 8235.65 866 839 221.1
D 13 249 619383 2797.71 866 839 221.1
D 11 241 138159 621.11 866 839 221.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter